Should be able to change the button for any control. When you start up and can pick your display settings/volume stuff there is a key settings button on the lower right side IIRC. You can change each button there to keyboard or joypad settings.

The top four don't show up in the key setting "wizard" from the menu, they must be the d-pad controls since they're close numbers. With a little experimenting, you should be able to figure out the numbers for ASWD or whichever setup you want and sub them in.